[sentry-junior]

Follow-up to #1927 (CLI-10), as decided in this review thread.

The invalid_function_argument 400 can now carry a hint (getsentry/sentry#129981). readErrorFields reads it next to function and argument, and sentry explore shows it as the suggestion. The CLI's own transaction.duration → span.duration mapping is gone, since the server owns that text now. The tags[X,number] / sentry attribute list hint names CLI commands and flags, so it stays in the CLI as the fallback when there's no hint.

Until sentry#129981 deploys, transaction.duration gets the generic fallback hint instead of the span.duration one.

Before

$ sentry explore my-org/ --dataset transactions -F 'sum(transaction.duration)'
Error: Sentry rejected --field "sum(transaction.duration)" for dataset "spans".

transaction.duration is invalid for parameter 1 in sum. Its a string type field, but it must be one of these types: {'number', 'duration'}

Try:
  Use span.duration instead of transaction.duration. Transactions are queried as spans, which store their duration in span.duration.

After

With the server's hint:

$ sentry explore my-org/ --dataset transactions -F 'sum(transaction.duration)'
Error: Sentry rejected --field "sum(transaction.duration)" for dataset "spans".

transaction.duration is invalid for parameter 1 in sum. Its a string type field, but it must be one of these types: {'number', 'duration'}

Try:
  Use span.duration instead of transaction.duration on the spans dataset.

Without it (before sentry#129981 deploys):

Try:
  sum() does not accept transaction.duration on dataset "spans": it may not exist there, or may not have the type sum() needs. Reference a numeric custom attribute with its type, e.g. tags[transaction.duration,number]; to check the key and its type, run: sentry attribute list <org>/ transaction.duration --dataset spans

via @BYK.

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1 Skipped Deployment

Project	Deployment	Actions	Updated
sentry-local	Skipped		Nov 4, 2026 10:24pm UTC